Coronavirus-related syndrome surfaces in older adults; stillbirths cause worry
ঢাকা ট্রিবিউন
প্রকাশিত: ১৪ জুলাই ২০২০, ১১:০৬
Any immunity to coronavirus reinfection among people who already have had Covid-19 might wane after a few months, particularly if their infection was mild, two studies suggest